<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
            <script>
                try{
                    alert(aa);

                } catch (e){
                    //console.log(e);

                } finally {

                }

                alert('bb');
            </script>
</body>
</html>